|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||428/069 ; 428/071 ; 264/102 ; 156/257 ; 29/897.32|
|발명자 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 47 인용 특허 : 4|
A core panel or box of rigid plastics microporous foam is provided with parallel spaced passages or grooves and is placed within an envelope or bag of flexible multi-layer barrier film impervious to the passage of gas. The bag includes an integral evacuation tubular portion which is releasably coupled to an evacuation nozzle connected by a manifold with solenoid valves to a vacuum pump. After air is substantially evacuated from the foam core and the bag to collapse the bag against the foam core and into the grooves, a vacuum sensor operates a computer wh...
[ What is claimed is:] [1.] A method of efficiently producing a vacuum insulated article, comprising the steps of forming a core of rigid open-cell microporous foam, forming a plurality of parallel spaced evacuation passages within the core, forming a partially sealed bag of flexible gas impermeable film, extending the film to form a tubular evacuation portion of the bag, inserting the core into the bag, sealing the bag to form an air-tight enclosure for the core, evacuating the bag and the cells of the core with a tubular nozzle projecting into the tubu...